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G. BAUR. Stylographic Fountain-Pen.

No. 225,914 Patented Mar. 30, 1880.

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UNITED STATES PATENT OFFICE.

CHARLES BAUR, OF NEW YORK, N. Y.

STYLOGRAPHIC FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 225,914, dated March 30, 1880.

Application filed November 14, 1879.

To all whom it may concern Be it known that .1, CHARLES BAUR, of New York city, county and State of New York, have invented certain new and useful Improvements in Stylographic Fountain-Pens, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to a fountain-pen for which Letters Patent were issued to me dated October 14, 1879, and numbered 220,568.

It consists in a taper-pointed valve-rod made to fit accurately within the conical point. or nib of the glass tube by grinding them together, so as to effectually prevent drip or leakage; also, in a metallic frame in which is mounted or placed the valve-rod and its actuating-spring, said frame being made of a shape that will readily admit of its introduction within the tube and be held therein by its lateral spring-tension, making a simple and easy method for adjusting the tension of the convolute spring bearing upon the valve-rod, and also to admit of its withdrawal from the tube when it becomes necessary to clean the ink-reservoir.

It also consists in making a stopper for the reservoir, preferably of rubber, said stopper having a conical exterior, and provided with atapered or funnel-shaped hole or bore extending entirely through its longitudinal center; also, in a sheath of elastic rubber made so as to cover the writing-point or nib of the glass tube for the purpose of keeping the ink at that point in a moist condition; also, in other improvements hereinafter specified.

In the accompanying drawings, Figure 1 represents a longitudinal central section of a pen embodying my improvement. Fig. 2 is an enlarged view of the valve-rod and its actuating'spring mounted in a metallic springframe detached from the tube. Figs. 3 and 4 are enlarged views of the fibrous disk detached from the tube. Fig. 5 is an enlarged View of the elastic sheath or nib-cover.

Similar letters of reference indicate like parts in the several figures.

In the drawings, A designates the reservoir-tube of a fountain-pen. This tube is preferably formed of glass, and is made of any desirable size. It is tapered to a fine tip or nib at one end, and in order that it may write smoothly the tip or nib is rounded both externally and internally.

B designates avalve-rod, formed of a metallic wire, the lower end of which is tapered and rounded, as shown in the drawings. Above the tapered part it is provided with a recess and shoulder, which tends to check and prevent sediment or foreign matter in the ink from passing into the valve-opening. The valve is ground into its seat within the nib or point of the tube to insure a perfect fit, and thus prevent drip or leakage.

G designates a spring, preferably of convolutc form. One end of this spring is secured to the valve-rod and the other end to a metallic frame, D. This frame D is made from a spring-metal strip, so formed that it can be readily inserted or withdrawn from the tube A, while the spring-tension within the frame will securely hold it in position by pressing upon the inner surface of the tube with sufficient force upon the sides thereof to hold it against accidental longitudinal displacement.

E represents a disk of a fibrous substance, made preferably of sponge, which is placed within the tube A so as to rest upon or near the metal frame D. This disk is intended to receive or take up as much of the sediment deposited by the ink as possible, and should be sufficiently porous to admit the atmospheric F designates a stopper for the upper end of the tube. It is made preferably of rubber and of a conical exterior form, so as to fit into tubes of various size bores.- It is perforated through its centerthat is, tapered or funnel-shaped, as shown in the drawings-to admit the air as the ink is used, and to receive the ink when forced into it by the action of heat expanding the fluid within the tube, which, in contracting by cold, will draw within the tube the overflow of ink, thus forming a pneumatic valve.

G designates an elastic rubber sheath, intended for use as a cover for the nib or tip of the tube when not in use, for the purpose of keeping the ink at the writing-point in a moist condition. i

The valve-rod B is so arranged within the frame D that it is held in the center of the tube, and so that when the lower part of the frame rests upon the conical or tapered part of the tube the valve will close the opening in the tip or nib, with its point slightly projecting beyond the Writing-point of the tube.

By means of a small wire hook the frame D can readily be Withdrawn, together with the valve-rod'and its actuating-spring, so that the tube can be cleaned.

My invention, as described, may be embodied or combined with a suitable holder or case, and thus make a very simple, durable, and cheap fountain-pen.

Having thus fully described the construction and operation of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The taper-pointed rod B, provided with an angular groove in its periphery, located just above the tapered point, substantially as and for the purpose herein specified.

2. The combination of the spring-frame D, the valve-rod B, and the actuating-spring (J,

arranged substantially as and for the purpose herein specified.

3. The combination, with tube A, provided with the spring-frame D, and valve-rod B, of the disk E, made of a porous substance, and located above the spring-frame D Within the fluid reservoir, substantially as and for the purpose specified.

4. The combination, with the tube A, provided with the spring-frame D and valvarod, of the stopper F, having its exterior conical in shape, and provided with an opening through its center of a size that will readily permit of air to pass through Without pressure, but not a denser fluid, substantially as and for the purpose herein specified. 1

CHARLES BA'UR.

\Vitnesses:

R. R. l\.[OFFAT'l, G. A. LILLIENDAHL. 

